Permutation-lock.



PETER HUDSON, OF BILLETT, ILLINOIS.

PERMUTATION-LOCK.

Specification of Letters Patent. 7

Patented July 16, 1907'.

Application {11 d November 26,1906. Serial No. 345,123.

To all whom it may concern:

Be itknown that I, PETER HUDsoN, a citizen of the United States, residing at Billett, in the county of Lawrence and State of Illinois, have invented certain new and useful Improvements in Permutation-Locks; and I do declare the following ,to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to permutation locks.

The object of the invention is to provide a lock of this character, which shall be exceedingly simple in construction, durable in use, easy to manipulate and practically free from danger of derangement from long continued use.

With the above and other objects in view, as will appear as the nature of the invention is better understood, I

the same consists in the novel construction and combination of parts of a permutation lock, as will be hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, and in which like characters of reference indicate corresponding parts,Figure 1 is a view in plan of the lock with the cover removed; Fig. 2 is a similar view of the cover of the lock viewed from' the under side; Fig. 3 is a detached detail view of the locking bolt; and Fig. 4 is a similar view of a latch that may be employed for temporarily locking the bolt without shifting the combination.

Referring to the drawings, 1 designates the casing of the lock, and 2 the cover, and as these parts may be constructed in any preferred manner, detailed description thereof is deemed unnecessary.

Arranged within the casing is the bolt 3, which is provided at one end with the usual keeper engaging lug 4 that projects through one end wall of the casing, and

its other end with a similar lug 5 that projects through the other end of the casing and carries a knob or handle 6. The bolt, for a greater portion of its length between the two lugs, is cut away to form a channel 7, the function of which will presently appear. In addition, the bolt is provided in one edge with a notch 8, and on one side, adjacent to the lug 4, with a bolt locking stud or pin 9, which operates, when the locking wheel 10 is in certain positions to prevent the bolt from being retracted. v j

The locking wheel has its periphery provided with teeth 11, and is also provided with concentrically arranged shoulders formed by a curved slot 13 disposed concentrically with the pivot 14 of the wheel from the periphery of which latter there extends a radially disposed slot 12 opening at its inner end into the slot 13.

its slot 12 in ali'nement with the locking lug 9.

Arranged concentrically of the axis of the wheel, and 1 on lines between the teeth are threaded openings 14 that are a'daptedto be engaged by a screw 15 which, by being shifted to any one of the various openings 14 effects a change in the combination.

The teeth 11 are engaged by a worm 16 carried by a shaft 17 that works in bearings18 and 19 carried by the casing and by similar bearings 20 and 21 carried by the cover, the bearings being provided with seats to receive the shaft.

- The seats in the bearings 18 and 20 are double-concaved, asat 22, to engage with a peripheral groove 23 in the inner end of the worm shaft, thus to hold the latter against longitudinal movement. The outer end of the shaft 17 carries a disk 24 and a knob 25 by which the shaft may beturncd, the disk 24 being provided with a, notch or indicator 26 which is adapted to register with a corresponding indicator on the casing, not shown, to enable the operator to determine when the locking wheel 10 has been moved to the proper position to bring its slot 12 into alinement with the locking stud 9, and thus permit the bolt to be retracted or shot. I The cover 2'is provided with a series.of threaded openings 27 corresponding to the openings 14 in the locking disk, and arranged concentrically with the pivot opening 28 in the cover, said openings being adapted to be engaged by a screw 29, which by being shifted to any one of the openings will change the combination. The cover also carries on its under side a spacer 30 in the nature of a disk, which is adapted to bear upon the upper side of the locking disk and thus permit it to be rotated without any rocking movement;

In order to hold the bolt temporarily from being retracted, and thereby prevent the look from being opened, even after the disk has been properly positioned, there is a latch 31 provided, which is disposed transversely of the casing, and projects beyond one side thereof and is provided with a knob or handle 32. This latch works in guides 33 on the inner walls of the casing, and is provided with a lug or head 34 that is designed to engage with the notch 8 in the bolt, and thus secure the object sought. The cover is held assembled with the casing by means of screws or belts in the usual manner.

In determining a combination, the locking disk is first moved to.the position shown in Fig. 1, that is with The screw 15 is then shifted to any one of the series of openings 14, and if desired, the same procedure will be observed with reference to the screw 29. When the cover has been replaced, the bolt 3 will then be pushed for- Ward as far as it will go by means of the knob 6, and the operator will turn the worm shaft 17 and will observe the number of rotations made by the disk 24 until the two screws or permutation setting members 15 and 29 contact. Upon the direction of rotation of the disk 10 being reversed, by the reverse rotation of the shaft 17, and the shaft given as many turns as were given to it originally the slot will be brought into alinement with the lug 9 and thus permit the bolt to be retracted. After the bolt has been shot or projected by pushing upon the knob 6, the shaft 17 is given a few turns which will move the slot 12 to one side or the other so that when an effort is made to retract the bolt the pin 9 will engage with the toothed or unslotted portion of the periphery of the disk or plate, 1.0, and thereby prevent the re traction of the bolt. To unlock the bolt the shaft 1.7 is rotated in either direction until the stops or screws 15 and 29 contact. The shaft is then rotated in the opposite direction the required number of turns, as determined at the time the look was set, as above described, to bring the slot 12 into register or alinement with the pin 9, when the bolt may be withdrawn by the knob 6, providing that the head 34 is out of the notch 8. In or; der to secure these results, the proportion between the teeth 11 and the worm is sucht-hat one complete rotation of the shaft 17 will cause the disk to be moved the distance between two teeth. Of course, this proportion may be varied if found necessary or desirable, and as this will be readily understood, detail illustration of any such obvious modification is omitted.

Should it be desired to prevent the bolt from being moved to locked position, the disk will be actuated until the stud 9 will engage with one of the walls 35 of the curved slot 13, and the length of the two branches of the slot '13 on each side of the slot 12 will be such that a predetermined number of turns of the disk 24 Will bring the stud 9 again opposite the slot 12 whereupon the bolt can be actuated.

As the worm 16 will be of greater diameter than the locking disk, it is necessary that the bolt 3 shouldbe provided with the channel 7 in order to permit it to have any longitudinal movement in the casing.

Having thus described my invention, what I claim as new and desire to secure by Letters-Patent, is:

1. In a permutation lock, the combination with a bolt provided with a locking stud, of a toothed locki'ng disk having a radial slot into which the stud will enter when the bolt is shot, and shoulders at the inner end of said slot, and means for rotating the disk.

2. In a permutation lock, the combination with a bolt provided with a locking stud, of a toothed locking disk provided with a radial and a concentric slot c on1inunicat ing with each other, the radial slot being provided to per mit longitudinal movement of the bolt, and the curved slot forming shoulders to lock the bolt against movement in one direction, and a worm meshing with the locking disk to actuate the same.

3. In a permutation lock, the combination with a bolt provided with a locking stud, of a toothed locking disk provided with a radial slot to receive the stud and with a series of coneentrically-disposed threaded orifices, a permutation changing member to engage any one of the orifices, a worm to actuate the disk, a cover provided with a series of threaded orifices, and a permutation changing element to engage any one of the orifices.

4. In apermutation lock, the combination with a disk provided with concentrically arranged shoulders, spaced apart, a reciprocatory locking bolt adjacent to said disk and provided with a projection that is adapted to be moved between said shoulders, and means for rotating the disk to cause one or the other of said shoulders to stand across the path of said projection and prevent movement of the bolt in one direction when at the limit of its throw in the other direction.

In a permutation lock, a toothed disk journaled therein and provided with a radial slot, the inner end of which is enlarged to form shoulders, a longitudinally slotted bolt beneath said disk provided with a shoulder and a projection adjacent to one end, said projection being adapted to be passed through the slot in said disk, a reciprocatory latch for engaging with said shoulder to limit the movement of the bolt in one direction, a worm shaft for engaging with the disk and rotating it, and means for varying the amount of the rotation of the disk.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

PETER HUDSON.

Witnesses Gnonon Rown, ULIssns REICHMON. 

